'Subject' was treated as a categorical factor using dummy variables.
The concept of selective leveling is introduced to provide preference of a categorical factor setting over other choices.
The experiments were designed by use of three-factors and three levels face-centered central composite design taking into account cutting velocity, tool rotary speed and feed rate as continuous factors and the induced ultrasonic vibration as categorical factor.
The frequencies of attacks (overt fights) and displays (threats) were compared using the general linear model (GLM), with the treatment as the categorical factor, observation sessions as the repeated measures, and social rank as a continuous factor.
Two full factorial split-plot designs were used based on six operating parameters, namely anode stoichiometry, cathode stoichiometry, temperature, anode inlet relative humidity and cathode inlet relative humidity and gas pressure and a categorical factor, the GDL type.
Its aim was to model the relationship between the Material Removal Rate (MRR) and the parameters of the process, namely, current, pulse on-time and pulse off-time along with a categorical factor (electrode material).
Four factors five levels central composite rotatable design was used to develop relationship for predicting dilution, which enables to quantify the direct and interactive effects of four numeric factors i.e. wire feed rate, open circuit voltage, welding speed and nozzle-to-plate distance and one categorical factor preheat current.
Applied types of L-HPCs and their 1 1 mixture were included in a categorical factor (X3). Studied parameters were floating lag time, floating time, floating force, swelling behaviour of tablets and dissolution of paracetamol, which was used as a model active substance.
In the present study, categorical factor layers were considered for fuzzy integration.
In fact, a numerical factor returns some ordered values, but a categorical factor provides some unordered symbols.
To run an ANOVA, there must be a continuous response variable and at least one categorical factor with two or more levels.
